CN103713110B - Based on the landfill yard soil slope failure centrifugal model test device of liquid gas coupling - Google Patents
Based on the landfill yard soil slope failure centrifugal model test device of liquid gas coupling Download PDFInfo
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- CN103713110B CN103713110B CN201310704206.8A CN201310704206A CN103713110B CN 103713110 B CN103713110 B CN 103713110B CN 201310704206 A CN201310704206 A CN 201310704206A CN 103713110 B CN103713110 B CN 103713110B
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Abstract
The present invention relates to a kind of landfill yard soil slope failure centrifugal model test device based on the coupling of liquid gas, comprise the hydro-extractor with hanging basket and the model casing be placed in hanging basket, model casing is interior is three cavity volumes by T-shaped baffle for separating, transparent seal box is respectively equipped with in three cavity volumes, for the spray module of spraying water in seal box and the air pressure Control Component for inflating in seal box, seal box is provided with can the upper cover of switch, this covers the joint being provided with pressure-controlled assembly gentle to spray module respectively and being communicated with, the landfill yard slight slope of test is provided with in seal box, rain glass and TDR saturation degree tester, rain glass is for measuring the air pressure in seal box, TDR saturation degree tester is for measuring the saturation degree of slight slope inner aqueous.Compared with prior art, the present invention by seal box water spray and the failure behavior controlling large-scale landfill slope under its air pressure inside simulated solution gas coupling, have easy to operate, simple structure, visualization are high and control the advantages such as accurate.
Description
Technical field
The present invention relates to a kind of Geotechnical Engineering centrifugal model test device, especially relate to a kind of landfill yard soil slope failure centrifugal model test device based on the coupling of liquid gas.
Background technology
Municipal solid wastes not easily burns, and burning disposal cost is high, and other is as all also immature in technology and cost in composting process, heat treating process etc.Carrying out landfill disposal to rubbish is conventional garbage disposal means, about has the domestic waste of 80% to be all landfill disposal in China.
In the past on Landfill Site Design, construction, landfill, the aspect such as to close consider the pollution and impact, the loss that less concern unstable failure causes and catastrophic consequence that mainly concentrate on underground water and atmospheric environment.Along with the qualitative destruction of Landfill Stabilization occurs in succession in all parts of the world, cause casualties and a large amount of property losses.Attracting wide attention of these accidents, the research for garbage loading embeading field stability is extremely urgent.
Sanitary landfill method is mainly adopted to process at China's domestic waste, because refuse soil Body components complexity adds long-time preloading, rainwater infiltrates and Biochemical degradation reaction produces a large amount of gas and percolate, causes rubbish soil body instability Mechanism in large-scale landfill very complicated.The Research on Mechanical Properties of Chinese scholars to the rubbish soil body had had significant progress in recent years, for the method for stability study many employings numerical simulation or based on the analytic method in classical soil mechanics theory, lacked the checking of test.Geotechnical centrifuge technology is that a kind of hydro-extractor that uses produces the equipment of centrifugal acceleration, so just minification can reproduce the duty of the rubbish soil body and then the data that acquisition is correlated with intuitively.To must can control moisture and air pressure based on the instability status of the rubbish soil body under the coupling of liquid gas, also not develop the centrifugal model device of the rubbish Stability of Earth Slopes that simultaneously can control water and air pressure at present both at home and abroad.
Summary of the invention
Object of the present invention be exactly in order to overcome above-mentioned prior art exist defect and a kind of landfill yard soil slope failure centrifugal model test device based on the coupling of liquid gas is provided.
Object of the present invention can be achieved through the following technical solutions: a kind of landfill yard soil slope failure centrifugal model test device based on the coupling of liquid gas, it is characterized in that, comprise the hydro-extractor with hanging basket and the model casing be placed in hanging basket, described model casing is interior is three cavity volumes by T-shaped baffle for separating, transparent seal box is respectively arranged with in three described cavity volumes, for the spray module of spraying water in seal box and the air pressure Control Component for inflating in seal box, described seal box is provided with can the upper cover of switch, this covers the joint being provided with pressure-controlled assembly gentle to spray module respectively and being communicated with, the landfill yard slight slope of test is provided with in seal box, rain glass and TDR saturation degree tester, described rain glass is for measuring the air pressure in seal box, described TDR saturation degree tester is for measuring the saturation degree of slight slope inner aqueous.
Described spray module comprises water tank, submersible pump, the first ball valve, pipeline and shower nozzle, described submersible pump is placed in water tank, described shower nozzle is connected with pipeline and is placed in seal box, and described pipeline is connected with the first ball valve and submersible pump successively by the joint of seal box upper cover.
Described pipeline is network pipe type pipeline, and this network pipe type pipeline is formed by connecting by the take-off pipe of a main pipe and Duo Gen parallel connection, and the first described ball valve is placed in main pipe, and described every root take-off pipe is in series with multiple shower nozzle.
Described shower nozzle is atomizer.
Described air pressure Control Component comprises air compressor, gas pressure reducer, the second ball valve and gas pipe line, described air compressor is by the fittings of gas pipe line and seal box upper cover, and described gas pressure reducer and the second ball valve are successively set in gas pipe line.
Described seal box adopts glass material to make.
Described hydro-extractor is provided with electrical power control cabinet, and this electrical power control cabinet is connected with submersible pump and air compressor respectively, realizes the switch controlling submersible pump and air compressor.
Described model casing side is provided with visual window, and this visual window peripheral hardware has the monitoring component for recording slope soil soil body change procedure.
Described monitoring component comprises illuminating lamp and video camera.
Described TDR saturation degree tester is provided with multiple, and distribution is embedded in slight slope.
Compared with prior art, the present invention has the following advantages:
1, air pressure Control Component is by inputting controlled gas to seal box, realize controlling seal box internal gas pressure, make the present invention can choose atmospheric pressure value according to actual conditions and testing program is set, to simulate the instability status of the rubbish soil body under the different air pressure of different times better;
2, spray module adopts multiple atomizers of ductwork type design and distribution, effectively can ensure the homogeneity of spraying water, control submersible pump by electrical power control cabinet to open and close, and then control injection flow rate, make the present invention can the saturation degree of Control experiment slope soil as required;
3, rain glass and TDR saturation degree tester can measure seal box internal gas pressure and saturation data, thus the state of the soil body in Real-Time Monitoring process of the test;
4, in the present invention, various piece is all fixed thus can be born high gravity field effect, and air compressor and submersible pump all adopt driven by power, and are connected with the electrical power control cabinet of hydro-extractor, easy to use;
5, on front side of model casing be organic glass, seal box also adopts transparent material, can be observed the change of the soil body very clearly by monitoring assembly, visualization is high, gathers image information intactly can record the change that in experimentation, the soil body occurs by monitoring component.
Accompanying drawing explanation
Fig. 1 is schematic top plan view of the present invention;
Fig. 2 is A-A front view in Fig. 1;
Fig. 3 is B-B front view in Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
As shown in Figure 1, a kind of landfill yard soil slope failure centrifugal model test device based on the coupling of liquid gas, it is characterized in that, comprise the hydro-extractor with hanging basket and the model casing be placed in hanging basket, described model casing 1 upper end open, facilitate assembling and the debugging of each assembly in model casing 1, one block of organic glass is inlaid with on front side of model casing 1, conveniently monitor in model casing 1, three cavity volumes are divided into by a T-shaped dividing plate 2 in model casing 1, the glass capsulation case 3 of transparent high strength is respectively arranged with in three described cavity volumes, for water delivery in seal box 3 spray module and be the air pressure Control Component of inflation in seal box 3, described seal box 3 is provided with can the upper cover of switch, this covers the joint being provided with pressure-controlled assembly gentle to spray module respectively and being communicated with, landfill yard slight slope and the data acquisition components of test is provided with in seal box 3, described data acquisition components comprises rain glass and TDR saturation degree tester, described rain glass 12 is fixed in seal box, for the atmospheric pressure value of Real-Time Monitoring seal box 3 inside, described TDR saturation degree tester is provided with multiple, distribution is embedded in slight slope for measuring the saturation degree of slight slope inside, the organic glass peripheral hardware of described model casing 1 has the monitoring component for recording slope soil soil body change procedure when hydro-extractor operates, this monitoring component comprises illuminating lamp and video camera.
As Fig. 1, shown in 2, described spray module comprises water tank 4, submersible pump 5, first ball valve 6, pipeline 7 and shower nozzle 8, described submersible pump 5 is placed in water tank 4, by its switch of electrical power control cabinet connection control with hydro-extractor, described pipeline 7 is network pipe type pipeline, this network pipe type pipeline is formed by connecting by a main pipe and three take-off pipes in parallel, every root take-off pipe is all in series with three shower nozzles 8, described shower nozzle 8 is atomizer, shower nozzle 8 is connected with take-off pipe and is placed in seal box 3, main pipe is connected with the first ball valve 6 and submersible pump 5 successively by the joint of seal box 3 upper cover, after submersible pump 5 starts, hydraulic pressure in water tank 4 is entered in main pipe, water enters in seal box 3 successively after the first ball valve 6.Spray module realizes uniform sprinkling in seal box 3, thus improves the saturation degree of the soil body.
As shown in Figure 1,3, described air pressure Control Component comprises air compressor 9, gas pressure reducer 10, second ball valve 11 and gas pipe line, the electrical power control cabinet of described hydro-extractor and its switch of air compressor 9 connection control, described air compressor 9 is by the fittings of gas pipe line and seal box 3 upper cover, air pressure reducing device 10 and the second ball valve 11 is in series with successively in described gas pipe line, the air pressure of the adjustable overcurrent gas of described air pressure reducing device 10, the second described ball valve 11 can realize the conducting of gas pipe line and close.
Apparatus of the present invention are adopted to realize specifically comprising following step based on the landfill yard soil slope failure centrifugal model test of liquid gas coupling:
First, the glass of first washing moulding case and seal box, make it to reach good visibility, again the simulation refuse soil prepared by a certain percentage is inserted in seal box by certain slope angle, soil distribution in vivo multiple TDR saturation degree tester, and tensimeter is fixed in seal box, then suitable height of water level is added water to water tank, finally guarantee that model casing each assembly inner connects normal, and assembly is fixed;
The second, fixing on the hanging basket being utilized by model casing loop wheel machine to be placed on hydro-extractor, afterwards the power supply of submersible pump, air compressor is connected to the electrical power control cabinet of hydro-extractor, opens monitoring component;
3rd, open the first ball valve of spray module, open the switch of submersible pump, spray module is water delivery in seal box, the saturation degree of the soil body is constantly raised, according to testing program requirement, after Preset Time, close submersible pump and the first ball valve, in seal box, stop water spray;
4th, after soil stabilization after absorbing water, the air pressure reducing device of adjustable pressure Control Component is required according to testing program, after setting overcurrent air pressure, open the second ball valve and open air compressor, observe the rain glass in seal box, after the rain glass number of degrees are stable, close air compressor and the second ball valve;
5th, after guaranteeing that in model casing, each component operation normally, setting centrifuge speed, the accekeration that testing program requires is reached after making hydro-extractor acceleration constant, open hydro-extractor, under the effect of hydro-extractor superelevation gravity field, slight slope generation unstability, the deformation of time dependent slight slope under monitoring component real time record.
Embodiment described in above embodiment is only a kind of mode of operation for content of the present invention; because apparatus of the present invention have good controllability; those skilled in the technology concerned can control the testing program condition under various environment of reaching of modifying easily; protection scope of the present invention should only not be confined to the embodiment described in instructions, and person skilled all should be under the jurisdiction of protection scope of the present invention according to the equivalent technologies method that concept of the present invention adopts.
Claims (10)
1. the landfill yard soil slope failure centrifugal model test device based on the coupling of liquid gas, it is characterized in that, comprise the hydro-extractor with hanging basket and the model casing be placed in hanging basket, described model casing is interior is three cavity volumes by T-shaped baffle for separating, transparent seal box is respectively arranged with in three described cavity volumes, for the spray module of spraying water in seal box and the air pressure Control Component for inflating in seal box, described seal box is provided with can the upper cover of switch, this covers the joint being provided with pressure-controlled assembly gentle to spray module respectively and being communicated with, the landfill yard slight slope of test is provided with in seal box, rain glass and TDR saturation degree tester, described rain glass is for measuring the air pressure in seal box, described TDR saturation degree tester is for measuring the saturation degree of slight slope inner aqueous.
2. a kind of landfill yard soil slope failure centrifugal model test device based on the coupling of liquid gas according to claim 1, it is characterized in that, described spray module comprises water tank, submersible pump, the first ball valve, pipeline and shower nozzle, described submersible pump is placed in water tank, described shower nozzle is connected with pipeline and is placed in seal box, and described pipeline is connected with the first ball valve and submersible pump successively by the joint of seal box upper cover.
3. a kind of landfill yard soil slope failure centrifugal model test device based on the coupling of liquid gas according to claim 2, it is characterized in that, described pipeline is network pipe type pipeline, this network pipe type pipeline is formed by connecting by the take-off pipe of a main pipe and Duo Gen parallel connection, the first described ball valve is placed in main pipe, and described every root take-off pipe is in series with multiple shower nozzle.
4. a kind of landfill yard soil slope failure centrifugal model test device based on the coupling of liquid gas according to Claims 2 or 3, it is characterized in that, described shower nozzle is atomizer.
5. a kind of landfill yard soil slope failure centrifugal model test device based on the coupling of liquid gas according to claim 2, it is characterized in that, described air pressure Control Component comprises air compressor, gas pressure reducer, the second ball valve and gas pipe line, described air compressor is by the fittings of gas pipe line and seal box upper cover, and described gas pressure reducer and the second ball valve are successively set in gas pipe line.
6. a kind of landfill yard soil slope failure centrifugal model test device based on the coupling of liquid gas according to claim 1, is characterized in that, described seal box adopts glass material to make.
7. a kind of landfill yard soil slope failure centrifugal model test device based on the coupling of liquid gas according to claim 5, it is characterized in that, described hydro-extractor is provided with electrical power control cabinet, this electrical power control cabinet is connected with submersible pump and air compressor respectively, realizes the switch controlling submersible pump and air compressor.
8. a kind of landfill yard soil slope failure centrifugal model test device based on the coupling of liquid gas according to claim 1, it is characterized in that, described model casing side is provided with visual window, and this visual window peripheral hardware has the monitoring component for recording slope soil soil body change procedure.
9. a kind of landfill yard soil slope failure centrifugal model test device based on the coupling of liquid gas according to claim 8, it is characterized in that, described monitoring component comprises illuminating lamp and video camera.
10. a kind of landfill yard soil slope failure centrifugal model test device based on the coupling of liquid gas according to claim 1, it is characterized in that, described TDR saturation degree tester is provided with multiple, and distribution is embedded in slight slope.
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| CN104101696B (en) * | 2014-07-28 | 2016-09-07 | 交通运输部天津水运工程科学研究所 | Geotechnical centrifuge rainer |
| CN106290793B (en) * | 2016-08-29 | 2019-03-29 | 中国水利水电科学研究院 | The centrifugal model test method of landfill body unstability is induced for solution-air |
| CN108398543B (en) * | 2018-04-12 | 2021-08-13 | 陈欢伦 | Centrifugal landslide box for researching influence of high-pressure gas on landslide in model sample |
| CN108760575A (en) * | 2018-05-29 | 2018-11-06 | 同济大学 | Consider that hydrate decompression exploitation induces sand borehole wall static liquefaction model test apparatus |
| CN109580368A (en) * | 2018-11-19 | 2019-04-05 | 同济大学 | Excavation Deformation of Deep Foundation Pits character centrifugal model test device in a kind of multilayer artesian water stratified formations |
| CN109752238B (en) * | 2019-01-03 | 2022-02-01 | 同济大学 | Consideration confined water underground continuous wall grooving local instability model test device |
| CN111337542B (en) * | 2020-04-10 | 2021-05-14 | 中南大学 | Method and device for monitoring osmotic absorption force in heavy metal polluted site by time domain reflection method |
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| WO1996025663A1 (en) * | 1995-02-17 | 1996-08-22 | British Nuclear Fuels Plc | Simulation testing of a capping for a waste disposal site |
| CN201974537U (en) * | 2011-03-31 | 2011-09-14 | 中国水利水电科学研究院 | High-pressure simulation testing apparatus for geotechnical centrifugal machine |
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